Multivitamin Injection Dosage and administration Horses and cattle 20 to 30 ml Calves, foals, sheep and pigs 5 to 10 ml Weaners and lambs 2 to 5 ml Piglets (up to 20 lbs) ½ to 2 ml The injection may be repeated at intervals of 10 to 14 days. Normal aseptic precautions should be observed. By intramuscular or subcutaneous injection. Clean the area of the injection site and swab with spirit. Ensure that all injection equipment is thoroughly clean and sterilised before use.